Main success scenario: User edits a key's contents in a field that is specifically formatted according to its metadata (e.g. number/date fields vs string fields with regex validation). Arrays are specifically formatted as lists of fields under a key. A description of the key is also shown.
Alternative scenario: User enters data that fails the field validation, the input field is marked as invalid (e.g. with a red color and some information text) and the data is not sent to the backend.
Error scenario: Technical problems while persisting to the key database. The user is informed about the problem.
Postcondition: The updated key is persisted to the database.